Store node and links into neo4j

Signed-off-by: Emilien Kenler <hello@emilienkenler.com>
Merge branch 'neo4j' of github.com:MiLk/UniCrawler into neo4j

Signed-off-by: Emilien Kenler <hello@emilienkenler.com>

Conflicts:
	crawler/index.js
	crawler/package.json